/Engine/Source/Runtime/LevelSequence/Public/LevelSequenceActor.h
Binds an actor to all the bindings tagged with the specified name in this sequence. Does not remove any exising bindings that have been set up through this API. Object Bindings can be tagged within the sequence UI by RMB -> Tags... on the object binding in the tree.
void AddBindingByTag ( [FName](API\Runtime\Core\UObject\FName) BindingTag, [AActor](API\Runtime\Engine\GameFramework\AActor) * Actor, bool bAllowBindingsFromAsset )